[Qemu-devel] [RFC 36/47] pc: acpi-build: drop template patching and memory hotplug objects dynamically

[Igor Mammedov <imammedo@redhat.com>]

in addition it saves us ~330LOC and makes it one binary blob less
stored in QEMU source tree by removing need to keep and update
hw/i386/ssdt-mem.hex.generated file there.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/i386/Makefile.objs          |   2 +-
 hw/i386/acpi-build.c           | 132 +++++++++----------------
 hw/i386/ssdt-mem.dsl           |  77 ---------------
 hw/i386/ssdt-mem.hex.generated | 213 -----------------------------------------
 4 files changed, 47 insertions(+), 377 deletions(-)
 delete mode 100644 hw/i386/ssdt-mem.dsl
 delete mode 100644 hw/i386/ssdt-mem.hex.generated

diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index 92f2ee6..790a56c 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -10,7 +10,7 @@ obj-y += acpi-build.o
 obj-y += bios-linker-loader.o
 hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
 	hw/i386/ssdt-misc.hex hw/i386/q35-acpi-dsdt.hex \
-	hw/i386/ssdt-mem.hex hw/i386/ssdt-tpm.hex
+	hw/i386/ssdt-tpm.hex
 
 iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
     ; then echo "$(2)"; else echo "$(3)"; fi ;)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 7829ea5..241bb2a 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -279,48 +279,6 @@ build_header(GArray *linker, GArray *table_data,
                                     table_data->data, h, len, &h->checksum);
 }
 
-static GArray *build_alloc_method(const char *name, uint8_t arg_count)
-{
-    GArray *method = build_alloc_array();
-
-    build_append_namestring(method, "%s", name);
-    build_append_byte(method, arg_count); /* MethodFlags: ArgCount */
-
-    return method;
-}
-
-static void build_append_and_cleanup_method(GArray *device, GArray *method)
-{
-    uint8_t op = 0x14; /* MethodOp */
-
-    build_package(method, op);
-
-    build_append_array(device, method);
-    build_free_array(method);
-}
-
-static void build_append_notify_target_ifequal(GArray *method,
-                                               GArray *target_name,
-                                               uint32_t value, int size)
-{
-    GArray *notify = build_alloc_array();
-    uint8_t op = 0xA0; /* IfOp */
-
-    build_append_byte(notify, 0x93); /* LEqualOp */
-    build_append_byte(notify, 0x68); /* Arg0Op */
-    build_append_value(notify, value, size);
-    build_append_byte(notify, 0x86); /* NotifyOp */
-    build_append_array(notify, target_name);
-    build_append_byte(notify, 0x69); /* Arg1Op */
-
-    /* Pack it up */
-    build_package(notify, op);
-
-    build_append_array(method, notify);
-
-    build_free_array(notify);
-}
-
 /* End here */
 #define ACPI_PORT_SMI_CMD           0x00b2 /* TODO: this is APM_CNT_IOPORT */
 
@@ -512,38 +470,12 @@ build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
                  table_data->len - madt_start, 1);
 }
 
-#include "hw/i386/ssdt-mem.hex"
-
-/* 0x5B 0x82 DeviceOp PkgLength NameString DimmID */
-#define ACPI_MEM_OFFSET_HEX (*ssdt_mem_name - *ssdt_mem_start + 2)
-#define ACPI_MEM_OFFSET_ID (*ssdt_mem_id - *ssdt_mem_start + 7)
-#define ACPI_MEM_SIZEOF (*ssdt_mem_end - *ssdt_mem_start)
-#define ACPI_MEM_AML (ssdm_mem_aml + *ssdt_mem_start)
-
 #define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */
 #define ACPI_SSDT_HEADER_LENGTH 36
 
 #include "hw/i386/ssdt-misc.hex"
 #include "hw/i386/ssdt-tpm.hex"
 
-static void
-build_append_notify_method(GArray *device, const char *name,
-                           const char *format, int count)
-{
-    int i;
-    GArray *method = build_alloc_method(name, 2);
-
-    for (i = 0; i < count; i++) {
-        GArray *target = build_alloc_array();
-        build_append_namestring(target, format, i);
-        assert(i < 256); /* Fits in 1 byte */
-        build_append_notify_target_ifequal(method, target, i, 1);
-        build_free_array(target);
-    }
-
-    build_append_and_cleanup_method(device, method);
-}
-
 /* Assign BSEL property to all buses.  In the future, this can be changed
  * to only assign to buses that support hotplug.
  */
@@ -895,27 +827,55 @@ build_ssdt(GArray *table_data, GArray *linker,
         }
         aml_append(&sb_scope, acpi_name_decl("CPON", pkg));
 
-        if (nr_mem) {
-            assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
-            /* build memory devices */
-            for (i = 0; i < nr_mem; i++) {
-                char id[3];
-                uint8_t *mem = acpi_data_push(sb_scope.buf, ACPI_MEM_SIZEOF);
-
-                snprintf(id, sizeof(id), "%02X", i);
-                memcpy(mem, ACPI_MEM_AML, ACPI_MEM_SIZEOF);
-                memcpy(mem + ACPI_MEM_OFFSET_HEX, id, 2);
-                memcpy(mem + ACPI_MEM_OFFSET_ID, id, 2);
-            }
+        /* build memory devices */
+        assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
+
+        for (i = 0; i < nr_mem; i++) {
+            #define BASEPATH "\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE) "."
+            const char *s;
+
+            dev = acpi_device("MP%02X", i);
+            aml_append(&dev, acpi_name_decl("_UID", acpi_string("0x%02X", i)));
+            aml_append(&dev, acpi_name_decl("_HID", acpi_eisaid("PNP0C80")));
+
+            method = acpi_method("_CRS", 0);
+            s = BASEPATH stringify(MEMORY_SLOT_CRS_METHOD);
+            aml_append(&method, acpi_return(acpi_call1(s, acpi_name("_UID"))));
+            aml_append(&dev, method);
+
+            method = acpi_method("_STA", 0);
+            s = BASEPATH stringify(MEMORY_SLOT_STATUS_METHOD);
+            aml_append(&method, acpi_return(acpi_call1(s, acpi_name("_UID"))));
+            aml_append(&dev, method);
+
+            method = acpi_method("_PXM", 0);
+            s = BASEPATH stringify(MEMORY_SLOT_PROXIMITY_METHOD);
+            aml_append(&method, acpi_return(acpi_call1(s, acpi_name("_UID"))));
+            aml_append(&dev, method);
 
-            /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
-             *     If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ...
-             */
-            build_append_notify_method(sb_scope.buf,
-                                       stringify(MEMORY_SLOT_NOTIFY_METHOD),
-                                       "MP%0.02X", nr_mem);
+            method = acpi_method("_OST", 3);
+            s = BASEPATH stringify(MEMORY_SLOT_OST_METHOD);
+            aml_append(&method, acpi_return(acpi_call4(
+                s, acpi_name("_UID"), acpi_arg0(), acpi_arg1(), acpi_arg2()
+            )));
+            aml_append(&dev, method);
+
+            aml_append(&sb_scope, dev);
         }
 
+        /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
+         *     If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ...
+         */
+        method = acpi_method(stringify(MEMORY_SLOT_NOTIFY_METHOD), 2);
+        for (i = 0; i < nr_mem; i++) {
+            ifctx = acpi_if(acpi_equal(acpi_arg0(), acpi_int(i)));
+            aml_append(&ifctx,
+                acpi_notify(acpi_name("MP%.02X", i), acpi_arg1())
+            );
+            aml_append(&method, ifctx);
+        }
+        aml_append(&sb_scope, method);
+
         {
             Object *pci_host;
             PCIBus *bus = NULL;
diff --git a/hw/i386/ssdt-mem.dsl b/hw/i386/ssdt-mem.dsl
deleted file mode 100644
index 22ff5dd..0000000
--- a/hw/i386/ssdt-mem.dsl
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Memory hotplug ACPI DSDT static objects definitions
- *
- * Copyright ProfitBricks GmbH 2012
- * Copyright (C) 2013-2014 Red Hat Inc
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- */
-
-/* This file is the basis for the ssdt_mem[] variable in src/acpi.c.
- * It defines the contents of the memory device object.  At
- * runtime, a dynamically generated SSDT will contain one copy of this
- * AML snippet for every possible memory device in the system.  The
- * objects will be placed in the \_SB_ namespace.
- *
- * In addition to the aml code generated from this file, the
- * src/acpi.c file creates a MTFY method with an entry for each memdevice:
- *     Method(MTFY, 2) {
- *         If (LEqual(Arg0, 0x00)) { Notify(MP00, Arg1) }
- *         If (LEqual(Arg0, 0x01)) { Notify(MP01, Arg1) }
- *         ...
- *     }
- */
-#include "hw/acpi/pc-hotplug.h"
-
-ACPI_EXTRACT_ALL_CODE ssdm_mem_aml
-
-DefinitionBlock ("ssdt-mem.aml", "SSDT", 0x02, "BXPC", "CSSDT", 0x1)
-{
-
-    External(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_CRS_METHOD, MethodObj)
-    External(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_STATUS_METHOD, MethodObj)
-    External(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_OST_METHOD, MethodObj)
-    External(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_PROXIMITY_METHOD, MethodObj)
-
-    Scope(\_SB) {
-/*  v------------------ DO NOT EDIT ------------------v */
-        ACPI_EXTRACT_DEVICE_START ssdt_mem_start
-        ACPI_EXTRACT_DEVICE_END ssdt_mem_end
-        ACPI_EXTRACT_DEVICE_STRING ssdt_mem_name
-        Device(MPAA) {
-            ACPI_EXTRACT_NAME_STRING ssdt_mem_id
-            Name(_UID, "0xAA")
-/*  ^------------------ DO NOT EDIT ------------------^
- * Don't change the above without also updating the C code.
- */
-            Name(_HID, EISAID("PNP0C80"))
-
-            Method(_CRS, 0) {
-                Return(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_CRS_METHOD(_UID))
-            }
-
-            Method(_STA, 0) {
-                Return(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_STATUS_METHOD(_UID))
-            }
-
-            Method(_PXM, 0) {
-                Return(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_PROXIMITY_METHOD(_UID))
-            }
-
-            Method(_OST, 3) {
-                \_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_OST_METHOD(_UID, Arg0, Arg1, Arg2)
-            }
-        }
-    }
-}
diff --git a/hw/i386/ssdt-mem.hex.generated b/hw/i386/ssdt-mem.hex.generated
deleted file mode 100644
index b3bfbbd..0000000
--- a/hw/i386/ssdt-mem.hex.generated
+++ /dev/null
@@ -1,213 +0,0 @@
-static unsigned char ssdt_mem_id[] = {
-0x35
-};
-static unsigned char ssdm_mem_aml[] = {
-0x53,
-0x53,
-0x44,
-0x54,
-0xc7,
-0x0,
-0x0,
-0x0,
-0x2,
-0x66,
-0x42,
-0x58,
-0x50,
-0x43,
-0x0,
-0x0,
-0x43,
-0x53,
-0x53,
-0x44,
-0x54,
-0x0,
-0x0,
-0x0,
-0x1,
-0x0,
-0x0,
-0x0,
-0x49,
-0x4e,
-0x54,
-0x4c,
-0x28,
-0x8,
-0x14,
-0x20,
-0x10,
-0x42,
-0xa,
-0x5c,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x5b,
-0x82,
-0x49,
-0x9,
-0x4d,
-0x50,
-0x41,
-0x41,
-0x8,
-0x5f,
-0x55,
-0x49,
-0x44,
-0xd,
-0x30,
-0x78,
-0x41,
-0x41,
-0x0,
-0x8,
-0x5f,
-0x48,
-0x49,
-0x44,
-0xc,
-0x41,
-0xd0,
-0xc,
-0x80,
-0x14,
-0x1e,
-0x5f,
-0x43,
-0x52,
-0x53,
-0x0,
-0xa4,
-0x5c,
-0x2f,
-0x4,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x4d,
-0x48,
-0x50,
-0x44,
-0x4d,
-0x43,
-0x52,
-0x53,
-0x5f,
-0x55,
-0x49,
-0x44,
-0x14,
-0x1e,
-0x5f,
-0x53,
-0x54,
-0x41,
-0x0,
-0xa4,
-0x5c,
-0x2f,
-0x4,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x4d,
-0x48,
-0x50,
-0x44,
-0x4d,
-0x52,
-0x53,
-0x54,
-0x5f,
-0x55,
-0x49,
-0x44,
-0x14,
-0x1e,
-0x5f,
-0x50,
-0x58,
-0x4d,
-0x0,
-0xa4,
-0x5c,
-0x2f,
-0x4,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x4d,
-0x48,
-0x50,
-0x44,
-0x4d,
-0x50,
-0x58,
-0x4d,
-0x5f,
-0x55,
-0x49,
-0x44,
-0x14,
-0x20,
-0x5f,
-0x4f,
-0x53,
-0x54,
-0x3,
-0x5c,
-0x2f,
-0x4,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x4d,
-0x48,
-0x50,
-0x44,
-0x4d,
-0x4f,
-0x53,
-0x54,
-0x5f,
-0x55,
-0x49,
-0x44,
-0x68,
-0x69,
-0x6a
-};
-static unsigned char ssdt_mem_start[] = {
-0x2c
-};
-static unsigned char ssdt_mem_end[] = {
-0xc7
-};
-static unsigned char ssdt_mem_name[] = {
-0x30
-};
-- 
1.8.3.1